NCERT Exercise 14.13 - Waves
Question: Identify which of the following represent (i) travelling wave, (ii) stationary wave, or (iii) neither: (a) y = 2 cos(3x) sin(10t), (b) y = 2?(x ? vt), (c) y = 3 sin(5x ? 0.5t) + 4 cos(5x ? 0.5t), (d) y = cos x sin t + cos 2x sin 2t.
Answer: (a) **Stationary**; (b) **neither**; (c) **travelling**; (d) **neither**.
Full step-by-step NCERT solution with diagrams on Something by Zero.